We had a wonderful, and all-to-short, stay at Calvin's place. His wife was a wonderful host and did everything to make us feel at home; she was also a great communicator, before and during our stay. Her English was great. (Unfortunately, we did not meet Calvin himself.) For short and long stays you could not wish for a better place -- it was perfect for us: not too far from Chulalongkorn Uni, shops and restaurants all round (good Thai restau and French cafe next door). The apt was quiet and clean and practical. Swimming pool and fitness room on top floor with great views. We will be back next time we come to Bangkok.